Air register for burners



Aug. 13, 1940. A. l.. BAKER AIR REGISTER FOR BURNERS Filed Dec. 21, 19572 Sheets-Sheet l xNvENToR ALBERT I.. 19A/ffii Bye-,4 www ATTORNEY Aug.13, 1940. A. l.. BAKER AIR REGISTER FOR BURNERS Filed Dec. 21. 1957 2Sheets--Shee'tl 2 Flc-3.2.l

INVENTOR ALBERT L. BAKER WJ N. QJLMJ ATTORNEY l patented ug. I3, 1946STTES UNE PATENT OFFlC- AIR REGSTER FOR BURNERS Application December 21,1937, Serial No. ll80`,93,',`y

3 Claims.

This invention relates to air registers for fuel burners.

An air register constructed to embody my in vention may be used with gasas well as oil firing.

The air register is adapted to be attached to a.

l the burner or burners for mixing withvthe fuel to be burned, wherebyturbulence and intimate mixing of the air and fuel are obtained.

The air register constructed to embody my invention is provided withpivotally mounted vanes which open outwardly and which may be movedmanually as a unit to desired positions to control the amount of airadmitted to the burner or burners.

In the drawings:

Figure' l represents a partial vertical longitudinal crosssection takenthrough an air register made according to my invention and in positionaround an opening in a furnace wall;

Figure 2 represents a partial transverse vertical cross-section takensubstantially on line 2 2 of Figure 1;

Figure 3 represents a partial transverse vertical cross-section takensubstantially on line 3-3 of Figure 1 with parts omitted to facilitatethe disclosure; and

Figure 4 represents a vertical crosssection of a detail takensubstantially on line 4-4 of Figure 1.

vReferring now to the drawings, the reference character I0 designates aportion of a furnace wall having a burner opening l2. The refractorywall i4 around the burner opening is flared as at I6. A burner assemblyi8 projects into the furnace and comprises a burner casing 22 which ismounted in a guide sleeve 22 held in xed position in any suitable mannerin an air register 24. The burner assembly is slidably mounted in theguide sleeve 22 as will be described in more detail hereinafter.

`The air register generally designated 24 is rigidly secured to thefurnacey wall around the burner opening l2 for supplying air to theburner or burners of the burner assembly i8. `Air vanes 26 are pivotallymounted on the air register and can be adjusted as a unit forcontrolling the amount of air supplied to the furnace for the'v Ycombustion of the fuel.

The air register 24 is preferably circular in shape and is open aroundits circumference so that air can be taken in through a large area. 5The air register 24 comprises a flanged member 28 having its flange 3Gextending into the furnace opening l2. Member 28 is secured to theexterior wall of the furnace lli in any suitable manner as by screws 32.A supporting plate member 34 v10 having a central, inwardly-directedflange 36 for receiving and supporting guide sleeve 22 is spaced frommember 23 by spacing members 38. Plate member 34 is secured to the plate-28 by elongated bolts or the like 40 which extend through 15 lspacingmembers 38.

The vanes are mounted to open outwardly between plate members 28 and 34and are secured along one edge to shafts 42 mounted for oscillation sothat when the shafts are moved the vanes will be moved to open or closedposition. The vanes 26 and shafts 42 extend at right angles to member34. The mechanism for actuating the vanes will now be described. Asshown in the drawing in Figure 3, the vanes are bent around the shafts42 as at 44 and attached to the shafts in this way. Other means ofsecuring the vanes to the shafts may be used. The shafts 42 aresupported and mounted for oscillation in supporting plate member 34 andplate member 28 in the following manner. Each shaft 42 extends throughan opening 4t in the supporting member 34 and through an opening 48 inthe flanged plate 28. The outer end of each shaft extends beyond platemember 34 as at 49. The support for the` inner end of the shaft 42 inflanged member 28 may be omitted if desired. Each shaft may be providedwith an abutment 5B. The shafts 42 are preferably arranged in a circleand the vanes 25 are so arranged thattheir free edges 5I rest on thebent, pivoted edges 44 of the adjacent vanes in closed position as shownin Figure 3 so that the air openings in the air register aresubstantially completely closed and no air will pass through theregister to the opening l2 in the furnace. When it is desired to movethe vanes 26 to open position, an operating mechanism is employed whichwill be now described to move the free edges 5I of the vanes outwardlyaround shafts 42 as pivots as shown in dot and dash lines in Figure 3. v

At its outer endl or the end adjacent plate member 34, each shaft 42 isi'lxedly secured to one end of a link 52, the other end of the linkbeing pivotally secured to one endl of a connecting rod 5d. The otherend of each connecting rod 5d is pivotally attached to a rigidprojecting member S8 which forms part of a movable collar The projectingmembers 5d extend from the periphery of the movable collar 58. Thecollar is supported on guide tube 22 for oscillation and. by moi` ng thecollar, the associated parts and linkages 52, 5d and 56 will be moved toactuate each shaft $2 and this in turn causes movement of each vane 26as will be later described in more detail in the operation of thedevice.

The movable collar 53 has an operating member extending therefrom whichis provided with a handle 62 whereby it may be moved to any desiredposition to move the vanes 255 to any desired position between full openand closed positions. Operating member is provided with a slot 64 toreceive stationary, arcuate guiding member GS. Arcuate member 55 issecured to standards G8 by bolts '.30, the standards 58 being rigidlysecured in any suitable manner to cover member 'f2 which is secured tosupporting plate member 3f by bolts 'ift or in any other suitablemanner. A wing nut 'f6 is threaded into operating member (itl and isadapted to be screwed against arcuate member 55 in order to hold theparts in any adjusted position.

The burner assembly is adapted to be moved longitudinally of the guidetube so as to vary the flame produced from the burner or burners. A gasburner i8 including burner casing 2d is slidably mounted in guide sleeveand is se cured to a vertical supporting member in any suitable manneras by bolts the lower end of the supporting member being provided with aslot ill! adapted to receive a horizontal supporting member S6 securedin any suitable manner to the exterior wall of cover (Sec Figs. 1 and4.) A nu S53 adapted to engage member S5 is provided for securing theburner in adjusted position. An oil burner 9d is supported by andextends through the gas burner 'I3 and is secured to a verticalsupporting menber by bracket The lower end of the supporting member isprovided with a slot similar to slot Sli on the upright member for thegas burner whereby the oil burner may be moved to the desired position.A wing nut is provided for securing supper`- member i oil burner 9F inadjusted position.

The gas burner 'i8 a gas inlet and a burner tip ltill. The cil burnerhas an oil inlet and a burner tip 15:3. A deecting member ifi@ may beused adjacent thc gas burner tip IEE?. While I have shown an oil burnerand a gas burner, it is to be understood that may use only one burner;or both burners may be used.

The operation of my air register wilL now be described. Whcn it isdesired to begin operation of the burner, the wing nut 'l'G on theoperating member 50 is loosened and the vanes 25 are moved to full openposition by moving movable coller 58 to provide an excess of air for theburner or burners. The movable collar is moved in a clockwise directionas viewed in Figure 3 in order to move the vanes 25 outwardly to fullopen position as shown in dot and dash lines in Figure 3. I prefer tohave the vanes 2G open outwardly because the area of opening or airadmittance in full open position is greater than in a construction wherethe vanes open inwardly. By moving the collar 5S in a clockwisedirection, arms 56 being connected thereto also move in a clockwisedirection. The connecting rods 5/3 being connected to arms 56 and tolinks 52 move the links in a counterclockwise direction. The links 52are connected to shafts l2 which are secured to the vanes 26 so thatmovement of the links 52 causes counterclockwise movement of the shafts42 and vanes 25 and the vanes move outwardly to open position as shownin Figure 3 in dot and dash lines. The shafts 42 are mounted foroscillation in supporting plates 28 and 34 as above described.

With the vanes 26 of the air register 25 in open position, the burnerassembly I8 or each burner separately is moved to the left in Figure 1after loosening wing nuts 88 and 96. Fuel is then admitted to the burneror burners and the fuel streams are then ignited in the usual way. Thevanes 26 are then moved in a closing direction to a position whereproper mixing of fuel and air is obtained. The closing movement of vanes26 is obtained by moving operating member E9 and movable collar 58 in acounterclockwise direction in Figure 3. My air register is adapted foruse with oil ring as well as gas firing Solid fuels may also be used.

By moving the burner or burners to the left in Figure 1 from theposition there shown, air admitted through the air register will bethoroughly mixed with the atomized oil or gas before the stream isdischarged into the furnace. This will speed the ignition reaction ofthe gas or oil in burning and the diameter of the llame will be reduced.If it is desired to increase the diameter of the flame, it is onlynecessary to push the oil or gas burner to the right in Figure 1. Inthis way the effect of air mixing with the atomized oil or gas streamwill be delayed and this will result in a greater ame diameter and alower central velocity of the products of combustion.

The vanes 26 control the quantity of air admitted to the burner fueloutlet and direction of air flow. The vanes 2S give the admitted air aswirling or rotative motion. The air entering through the air duct orfrom the atmosphere is directed by the vanes 26 and vertically arrangedspaced members 28 and 34 toward the center of the burner immediatelyadjacent the burner fuel outlet with the desired velocity so that theair is mixed with the fuel and is not by-passed or short circuitedaround the burner assembly directly into the furnace. Due to therotative velocity and swirling motion given to the air by the airregister, a turbulent ow is obtained in the air-fuel mixture whichproduces intimate mixing and consequently better combustion. Also theair passing into the air register has a relatively large velocity whichcarries the air toward the center of the air register, and due to thepositioning and arranging of the vanes and the air register, the air isnot short circuited into the furnace but is directed toward the burnerfuel outlet. From the description and drawings it will be seen that theair register 24 is positioned against the furnace wall and all air tothe furnace must pass through the air register and be directed by theoutwardly directed vanes toward the burner assembly and stratication ofthe fuel and air is prevented.

While I have shown and described one form of my invention, it is to beunderstood that this is only for the purpose of an example and manymodifications may be made within the scope of my invention.

I claim:

1. An apparatus of the character described in cluding an air registeradapted to be positioned adjacent a furnace wall opening, a sleevesupported by said air register and adapted to receive a burner, aplurality of vanes mounted for pivotal movement on said air register andarranged near the periphery thereof for opening movement outwardly withrespect to said air register, a horizontally arranged shaft rotatable ona horizontal axis for each vane, each vane being secured to itsrespective shaft whereby rotation Aof said shafts in one directioneffects outward opening movement of said vanes, a link secured at oneend to each shaft for moving said vanes, a collar mounted foroscillation on said sleeve, said collar having a plurality of spacedprojecting members, and connecting rods between said links and saidprojecting members on said collar, each connecting rod having one endsecured to the other end of its respective link and having its other endconnected to a projecting member whereby the oscillatory movement ofsaid collar effects movement of said shafts and vanes to control theamount of air passing through said air register.

2. An apparatus of the character described including an air registeradapted to be positioned adjacent a furnace wall opening, a sleevesupport-ed by said air register and adapted to receive a burner, aplurality of va-nes mounted for pivotal'movement on said air registerand arranged near theperiphery thereof for opening movement outwardlywith respect to said air register, a rotatable horizontally arrangedshaft for each of said vanes, each of said yva-nes being se' cured tolits respective shaft whereby rotation of said shafts in one directioneffects outward opening movement of said vanes, links secured at one endthereof to said shafts for moving said vanes, a collar mounted foroscillation on said sleeve, and connecting rods between the other endsof said links and said collar whereby the oscillatory movement of saidcollar effects movement of said shafts and vanes to control the amountof air passing through said air register.

3. An apparatus of the character described including an air registeradapted to be positioned adjacent a furnace wall opening, a sleevesupported by said air register and adapted to receive a burner, aplurality of vanes mounted for pivotal movement on said air register andarranged near the periphery thereof for opening movement outwardly withrespect to said air register, a rotatable horizontally arranged shaftfor each of said vanes, each of said vanes having one edge portionsecured to its respective shaft, links secured at one end thereof tosaid shafts for moving said vanes, a collar mounted for oscillation onsaid sleeve, connecting rods between the other ends of said links andsaid collar whereby movement of said collar effects movement of saidshafts and vanes to control the amount of air passing through said airregister, said collar having an operating member rigidly secured theretoand means for guiding the movement of said operating member and forholding said collar and vanes in adjusted position.

ALBERT L. BAKER.

